Electrode Plate Lamination Using Positioning Holes for Fast Alignment
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Solution Overview
Problem
Existing methods for manufacturing electrode plate groups for batteries are complex and time-consuming, particularly in achieving high overlapping accuracy for lamination in all-solid state secondary batteries.
Innovation Solution
A manufacturing method and apparatus that involve temporarily positioning electrode plates with positioning holes, allowing the holes to communicate, and then using a positioning pin to adjust and secure the overlapping positions of the electrode plates with high accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If electrode plates are positioned one by one using positioning pins during lamination, then overlapping accuracy is improved, but lamination time increases and productivity decreases
Solution Approach 1:
The invention applies preliminary action by pre-positioning multiple positioning pins on the lamination stage before the lamination process begins. These positioning pins are arranged at predetermined locations corresponding to the positions where electrode plates need to be aligned. By preparing the positioning structure in advance rather than positioning each plate sequentially during lamination, the system achieves high overlapping accuracy while maintaining fast lamination speed, thus resolving the contradiction between precision and productivity
2Reliability
If electrode plates with different dimensions are laminated, then short circuit prevention is improved, but positioning accuracy becomes more difficult to achieve
Solution Approach 1:
The invention applies local quality by providing different positioning pin arrangements for different regions of the lamination stage. Specifically, positioning pins are configured at locations corresponding to the smaller positive electrode plates, while the larger negative electrode plates naturally extend beyond these positioned points. This localized positioning approach ensures that each electrode plate type is precisely positioned at its appropriate location, maintaining both short circuit prevention through dimensional differences and positioning accuracy through region-specific pin placement
Data Source
AI summary
Provided are a manufacturing method including a step of alternately placing positive and negative electrode plates, each having a positioning hole, with solid electrolyte layers interposed therebetween to be temporarily positioned, thereby obtaining a temporarily laminated electrode plate group in which the positioning holes communicate with each other, and a step of inserting a positioning pin into the communication hole, in which the positioning holes communicate with each other, while restricting a variation in a lamination direction, thereby performing main positioning of the electrode plates, and a manufacturing apparatus including an electrode plate group accommodation frame that accommodates positive and negative electrode plates in a state of being alternately laminated with the solid electrolyte layers interposed therebetween, to temporarily position the electrode plates and obtain a temporarily laminated electrode plate group in which positioning holes communicate with each other, a positioning jig on which a positioning pin is erected, and a restricting member that has a pin receiving portion that is provided in a restricting portion that restricts a variation in a lamination direction of a communication hole in which the positioning holes communicate with each other.